An optimized sheet metal forming process using non-isothermal heating system

The process parameters used in the hybrid superplastic forming have been optimized. Since the hybrid process was a combination of hot drawing and gas blow forming, the effects related with the two forming phases were taken into account to facilitate the process design. The punch shape has been modif...

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Main Authors: Tan, Ming-Jen, Castagne, Sylvie, Lim, Samuel Chao Voon, Liu, Jun
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/97413
http://hdl.handle.net/10220/10699
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-974132020-03-07T12:47:13Z An optimized sheet metal forming process using non-isothermal heating system Tan, Ming-Jen Castagne, Sylvie Lim, Samuel Chao Voon Liu, Jun School of Mechanical and Aerospace Engineering A*STAR SIMTech The process parameters used in the hybrid superplastic forming have been optimized. Since the hybrid process was a combination of hot drawing and gas blow forming, the effects related with the two forming phases were taken into account to facilitate the process design. The punch shape has been modified. A two-stepped punch in accordance with the die geometry with length of 43 mm was used in this work. Finite element modeling (FEM) was carried out to detect the low-plastic-strain areas, where the materials would have capabilities to be deformed more as the temperature increased. The non-isothermal heating system was then adopted to heat up these selected areas to improve the material formability during deformation. The maximum thickness thinning of the formed sample was 40%. Microstructures observed via electron backscattered diffraction (EBSD) have shown the occurrence of grain growth and recrystallization. It is clear that no big structure defect resulting from large plastic deformation was found. 2013-06-26T04:28:14Z 2019-12-06T19:42:24Z 2013-06-26T04:28:14Z 2019-12-06T19:42:24Z 2012 2012 Journal Article Liu, J., Tan, M.-J., Castagne, S., & Lim, S. C. V. (2012). An Optimized Sheet Metal Forming Process Using Non-Isothermal Heating System. Advanced Materials Research, 500, 385-390. 1662-8985 https://hdl.handle.net/10356/97413 http://hdl.handle.net/10220/10699 10.4028/www.scientific.net/AMR.500.385 en Advanced materials research © 2012 Trans Tech Publications, Switzerland.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description The process parameters used in the hybrid superplastic forming have been optimized. Since the hybrid process was a combination of hot drawing and gas blow forming, the effects related with the two forming phases were taken into account to facilitate the process design. The punch shape has been modified. A two-stepped punch in accordance with the die geometry with length of 43 mm was used in this work. Finite element modeling (FEM) was carried out to detect the low-plastic-strain areas, where the materials would have capabilities to be deformed more as the temperature increased. The non-isothermal heating system was then adopted to heat up these selected areas to improve the material formability during deformation. The maximum thickness thinning of the formed sample was 40%. Microstructures observed via electron backscattered diffraction (EBSD) have shown the occurrence of grain growth and recrystallization. It is clear that no big structure defect resulting from large plastic deformation was found.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Tan, Ming-Jen
Castagne, Sylvie
Lim, Samuel Chao Voon
Liu, Jun
format Article
author Tan, Ming-Jen
Castagne, Sylvie
Lim, Samuel Chao Voon
Liu, Jun
spellingShingle Tan, Ming-Jen
Castagne, Sylvie
Lim, Samuel Chao Voon
Liu, Jun
An optimized sheet metal forming process using non-isothermal heating system
author_sort Tan, Ming-Jen
title An optimized sheet metal forming process using non-isothermal heating system
title_short An optimized sheet metal forming process using non-isothermal heating system
title_full An optimized sheet metal forming process using non-isothermal heating system
title_fullStr An optimized sheet metal forming process using non-isothermal heating system
title_full_unstemmed An optimized sheet metal forming process using non-isothermal heating system
title_sort optimized sheet metal forming process using non-isothermal heating system
publishDate 2013
url https://hdl.handle.net/10356/97413
http://hdl.handle.net/10220/10699
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